Denson site, locality 41619 (Eocene of the United States)

Where: Colorado (39.5° N, 108.0° W: paleocoordinates 43.3° N, 94.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Green River Formation, Bridgerian (50.3 - 46.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - large; lithified lime mudstone

• Laramide-style block faulting

Size class: macrofossils

Preservation: adpression

Collected by D. Kohls in 1998; reposited in the USNM

Primary reference: P. Vrsansky, L. Vidlicka, F. Ciampor and F. Marsh. 2012. Derived, still living cockroach genus Cariblattoides (Blattida: Blattellidae) from the Eocene sediments of Green River in Colorado, USA. Insect Science 19:143-152 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 138808: authorized by Matthew Clapham, entered by Matthew Clapham on 28.01.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Blattodea - Ectobiidae
Cariblattoides labandeirai n. sp. Vrsansky et al. 2012 cockroach
USNM 542284
 Orthoptera - Gryllotalpidae
? Pterotriamescaptor americanus n. sp. Gorochov 2012 mole cricket
USNM Kohls 51944
 Orthoptera - Mogoplistidae
Pteromogoplistes ? smithii Scudder 1890 scaly cricket
USNM Kohls 51901